605561601655 has 16 divisors (see below), whose sum is σ = 764939335680. Its totient is φ = 458940300192.

The previous prime is 605561601649. The next prime is 605561601691. The reversal of 605561601655 is 556106165506.

It is a cyclic number.

It is not a de Polignac number, because 605561601655 - 2¹¹ = 605561599607 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6394662 + ... + 6488668.

It is an arithmetic number, because the mean of its divisors is an integer number (47808708480).

Almost surely, 2^605561601655 is an apocalyptic number.

605561601655 is a deficient number, since it is larger than the sum of its proper divisors (159377734025).

605561601655 is a wasteful number, since it uses less digits than its factorization.

605561601655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161838.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 605561601655 in words is "six hundred five billion, five hundred sixty-one million, six hundred one thousand, six hundred fifty-five".